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In this activity, learners search for various kinds of items made from minerals around their home or school, including toothpaste, wall paint, kitty litter, and bricks.

In this activity, learners investigate the basic crystal structures that metal atoms form.

In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

In this great hands-on activity, learners use patterns to make a teepee from newspaper that they sit inside.

In this engineering design activity, learners will design, test, and build a “haunting machine” to solve a Sherlockian mystery.

In this activity, learners will reuse plastic bags in an interesting way.

In this activity, learners build a carousel toy that spins when pushed down.

In this activity, learners use recycled materials to build a bridge that holds as many potatoes as possible. They investigate weight, height, strength, and measurement as they seek design solutions.

Learners develop awareness and understanding of the daily air quality using the Air Quality Index (AQI) listed in the newspaper or online.

Put on a pair of gloves and be the conductor of your invisible orchestra!

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

In this activity on page 5 of the PDF, learners mimic the process for making bricks. Learners shape and bake creations from a dough that is made from flour, salt, and water.

In this activity, learners build a mini dancing robot. This engineering activity introduces learners to electricity, circuits, switches, conductivity, and motors.

Make a kite out of a garbage bag, shower curtain, painting tarp--anything light, thin, flexible and plastic!

Learners examine the manufacturing process while they make picture frames from cereal boxes.

Students design and build their own parachutes in this hands-on engineering project.

Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!

Learners design and create musical instruments from common objects; their challenge is to create an instrument that can make three different tones.

In this activity, learners will build the highest tower they can out of recycled materials.

In this activity, learners build unique yo-yos, which spin round and round without moving up and down.